Self-sealing paste tube cap



Sept. 5, 1933. KUN E 1,925,926

SELF SEALING PASTE "I UBE CAP Filed March 19, 1932 Patented Sept. 5,1933 UNITED srArEs PATENT orrrce 1,925,926 saw-samnorasrs TUBE carConrad Kunkel, Oceanside, Lori: Island, N. Y. Application ma 1932.Serial No. 599,966 2 claims. (01. 221+) This invention relates toa selfsealing tooth paste tube and has for an object to provide an improvedself sealing tooth paste tube, equally suitable for shaving cream,salves' or other types of paste, which will open automatically wheneverpressure is applied to exude the paste therein and will close to sealthe tube as soon as the pressure is released.

A further object of this invention is to provide an improved selfsealing paste tube. cap which may be applied to any conventional pastetube thus converting a regular tube into a self sealing tube. 1

Still a further object of this invention is to provide an improvedcombination self sealing cap and valve-which may be applied to anyconventional paste tube, making the same a self sealing tube.

With the foregoing and other objects in view, as will hereinafter becomeapparent, this invention comprises the constructions, combinations andarrangements of parts hereinafter set forth, disclosed and shown on tleaccornpr ny ing drawing. In this drawing,

Figure l is a vertical section of a collapsible tube showing selfsealing valve, said valve being closed in this figure.

Figure 2 is a sectional view similar to Figure l, but showing thesealing valve in open po= sition.

Figure 3 is a top plan view of Figure i showing the Emmi-spherical valveclosed.

Figure d is an enlarged plan view of the hernispherical valve, and

Figure 5 is a sectional view 5-5 of Figure There is shown at 10 aconventional collapsibletube having the usual neck 11 and dischargenozzle 12, which is threaded in the usual manner as at 13.

Asap it having an opening 15 therein is threaded on the threads 13 ofthe nozzle 12. The cap is will be formed preferably as shown, having thethreaded portion 16 and an outer plate portion 1'? of springy material,the plate 17 being separated from the threaded portion 16 by an internalflange 18. A spider member comprising a ring 19 is adapted to fit underthe flange 18 on the edge of the nozzle 12 and has a non fiexible bridge26 holding anemispherical valve 21 centrally thereof below the opening15.

To assemble this self sealing tooth paste cap the ring 19 is placed onthe edge of the nozzle 12 and the cap 14 threaded thereover until thetaken on line flange 18 comes in contact with the ring 19 and pressessecurely against the end of nozzle 12-. Obviously, the tube may beinitially provided with this type of cap or this type of cap may besubstituted for the conventional cap initial-,- ly provided therefor.When there is no pressure placed on the body of the collapsible tube 10,the plate 17 will remain normally fiat, thus bringing the opening 15against the sealing 'valve 21 securely excluding the air therefrom andpreventing any waste of the material 22 in the tube. l

When it is desired to project. the paste or other material 22 from thetube it is only necessary to press thecollapsiblel tube 10, This willcause the material 22 to press against the bottom of the springy plate17 causing it to 'nd in the position shown in Figure 2, thereby spacingthe orifice 15 away from the valve 21 and allowing the material 22toflow therethrough until the pressure on the tube 10 is released,whereupon the spring plate 1'? will again spring baclr to the flatposition again sealing the tube.

The novel features and the operation of this device will be apparentfrom the foregoing description. While the device has been shown and thestructure described in detail, it is obvious that this is not to beconsidered limited to the exact form disclosed and that changes may bemade therein within the scope of what is claimed without departing fromthe spirit of the invention.

Having thus set'forth and disclosed the nature of this invention, whatis claimed is:

1. A self sealing tube comprising in combination a discharge nozzle, acap, means for securing said cap on said nozzle, a spring plate formingthe closed end of said cap, means for spacing said spring plate from theend of said nozzle, comprising an internally projecting horizontalflange on said cap, a valve, said spring plate having an openingtherethrough cooperating with said valve to prevent discharge of thecontents from said tube when the plate is mg in unsprung position, andmeans for detachably securing said valve across the nozzle opening, saidmeans comprising a spider on which said valve is mounted, a peripheralportion of said spider being removably secured between said 105 spacingmeans and the outer end of the tube neck.

2. In a self-sealing paste tube closure, a cap having a threadedsecuring portion, a spring plate closing one end of said cap, aninternal- 1w ly projecting horizontal flange between said rial extendingdiametrically across the ring to the center of which said valve isrigidly attached, said ring being removably secured beneath saidinternally projecting horizontal flange when the cap is attached to acontainer neck.

CONRAD Km;

